A condensation dedust-demister set

ABSTRACT

A condensation dedust-demister device, comprises at least one of the followings: a condensator, a refluent demister, a large curve demister, a mixed curve demister and a super-sine demister etc.. Said condensator with a shell/cavity style pipeline refrigerating system or cooling system can condense dust into mist/haze and be designed as the first class tube demister, consequently said refluent demister and so on can collect and dedust-demist what condensator condensed by centrifugal effect, with the assisting of easiness made by collecting liquid wall and drain as well as multiple classes composition the condensation dedust-demister set can dedust flue gas to 0 mg/Nm3 and demist to 10 mg/Nm3 when raw gas containing dust less than 20 mg/Nm3. This set can remove grains of SO3 aerosol and Hg0 etc. due to be condensed to haze at the same time.

FIELD OF THE PRESENT INVENTION

The present invention relates to a dedust-demiter device for flue gasetc., particular to a condensation dedust-demister set, which can mostlybe applied to environmental field, particular to wet flue gas andsaturated flue gas, such as desulfurization and/or de-nitrogen tower,bubbling tower, various washing tower, etc., as well as all sorts of gasincluding vapors to be removed off dust or mist including aerosols, andliquid to be removed off grains of impurity. This device can also beapplied in the separation of liquids or solid with not same density.

BACKGROUND OF THE PRESENT INVENTION

Today, whereas the requirements of national development and humancivilization betterments, the environmental protection technologies mustgo ahead, no harmonious environments no developments, what imply areapparently exhibiting in the governmental policies of conditions ofconstructions, hereby, the enterprises, the word of super-pureemissions, is the problem what must be being considered firstly.

This condensation dedust-demister set is just a solution of super-pureemissions for enterprises!

SUMMARY OF THE PRESENT INVENTION

This invention is to provide a device of dedusting and demisting forflue gas, its significance lies in the practice of this device can beable to dedust and demist to a extent of super-pure emissions with lowercosts.

The present invention brief introduction:

The condensation dedust-demister set, comprises at least one offollowing demister: a condensator, a refluent demister, a large curvedemister, a mixture curves demister and a super-sine demister,thereinto, said condensator with a shell style heat-conductible pipelineis to duct refrigerating medium via vaporizing or expanding to own thefunction to condense dust of pure gas into mist/haze; Said condensatorand each demister can be assembled individually, said shell stylepipeline can be a multiple shells passage.

Said refrigerating medium can flow inside shell journey passage of saidshell style pipeline, or can flow inside tube journey passage of saidshell style pipeline, or can flow both inside shell and tube journeypassages of said shell style pipeline simultaneously in the case ofmultiple shells.

Said refrigerating medium is of utilizable common one includingcompressed gas which can be used as refrigerating medium.

One at least of said shell style pipeline runs through section of fluegas flow and a collecting gas box is assembled at each end whichconsequently forms a demisting module, and one at least of saiddemisting module covers the whole section of flue gas flow; Or at leastone joint locality of single said shell style pipeline of said demistingmodule is set to joint single said pipeline; Or at least one transitioncollecting gas box is located on said demisting module to joint singlesaid shell style pipeline beside itself two side; Or at least onemid-collecting gas box is located on said demisting module via whichjointing to get through the section of flue gas flow; A demisting modulecan comprise a willful combination of at least one of said jointmethods; at least one of said demisting module covers a whole section offlue gas flow. The number of shell style pipelines contained in ademisting module may be 1-100, usually can be set as 10-30; The numberof said various joint localities depends on the diameter of tower, theconditions of assembly, the intensity of structure elements etc.,usually can be set as 0-30. In this invention said section of flowdenotes the section or near section of a flowing passage of flue gas orliquid.

The surface of fundamental refrigerating function elements of saidcondensator can be designed with heat radiating elements or frames. Saidfundamental refrigerating function elements connotes a least frames orstructures of refrigerating or cooling function of a demister such as apassage of shell style pipeline or cavity style pipeline in presentinvention, thereto a usual heat-conductible iron plank, tube and piece.

At the first class site is located with said condensator; At the secondclass site and the possible consequent class sites are located with atleast 0 said condensators simultaneously, on said sites but not thefirst class all sorts of demisters of present invention can be located.This configuration is designed for super-pure emission, but alldemisters including condensator in this invention can be assembledindividually. The sequence of classes is arranged in a method along withthe flow direction of flue gas said sites are named as first class,second class etc. from front to back.

When the dust of raw gas is less than 20 mg/Nm3 or the emission standardis lower relatively or the condensator locates on a site except thefirst class, at least one cooling medium or mixture cooling medium ofwater, oil and gas can substitute for said refrigerating medium,especial environmental air around, a boiler supplied wind, a lowertemperature flue gas emitted; A cavity style pipeline including refluentcurves said in claim 10 can substitute for segments or whole of saidshell style pipeline; said two substitutions can be not in simultaneity.

When the flue gas to be emitted to environment needs to be heated suchas that have been cooled deeply, a pure gas heater in such project maybe designed and can utilize said shell style pipeline.

The surface of fundamental pure gas heating function elements can bedesigned with heat radiating elements or frames.

Illustrated as FIGS. 4, 5, 6 and 11, the demisting elements owningdemisting function of said refluent demister comprises at least onedemisting vane owning at least one refluent curve of said vane sectionwhich forces flue gas to be refluent; Near broken lines can substitutefor said refluent curves; The direction of said refluent curve canwillfully be set at will; Said refluent curve denotes the section curveof demister vane which random tangents of two sides can form a leastangle opposite flue gas passage less than or equal to 90°. Saidrefluence implies herein the change of flow direction of flue gas ismore than or equal to 90°.

The unit layer of demisting module comprises said demisting elements viacomposing each other, one demisting module comprises at least one layerof said unit layer, one layer demister occupying wholly flow section offlue gas comprises at least one demisting module; Said composing eachother indicates all kinds of demisting elements shapes and its changeswhich contain but do not be limited into what said in this invention andcontain what can be reasonable imagined, and all sorts of possiblecomposing of layers back-forwards, left-rightwards and up-downwards,illustrated as FIGS. 4, 5, 6, 7, 9 of surface structures, 11, 12 ofmixture curve vanes elements containing refluent curve vanes, the numberof demister vanes of demisting element can be 1-10 pieces, normally 3-5pieces.

A demister which fundamental demisting function element is vane aredesigned with drains; and/or with collecting liquid walls; and/or withventuritube or near venturitube passages for flue gas comprising vanesnearest each other, and/or with parallel flue gas passages, saidventuritube and parallel passages can comprise various mixture flue gaspassages; and/or with convexities what aims at accelerating flue gasflow and/or with no intended leading current frames or structures atimports and/or exports of vanes for flue gas; said intended impliesmainly or merely designed; Near broken lines can substitute for saidvarious section curves of vanes or frames or structures on vanes; Thesurface meeting flue gas owning demisting function of a demister own atleast one frame of vertical drain, convexity, concave, hole, hamulus,convex slot, concave slot, cranny, what aimed said various frames andstructures lies in disturbing flue gas flow fields; Said above variousassistant frames and structures can be applied to a demisterindividually.

Illustrated as FIG. 11, said venturitube or near venturitube passagedenotes a flue gas passage section similar to the section of venturitubewhich can accelerate the velocity of flue gas, can be limited by sectioncurves of nearest vanes; Said parallel flue gas passage denotes asection curve of a demisting vane can be obtained via other sectioncurves of demisting vanes in a same demister module moving parallelly.

Said refluent curve of refluent demister can be designed as a largecurve to form a demisting vane; Vanes with said large curve and saidrefluent curve can together form various mixture curve vanes demisters;Near broken lines can substitute for section curves of various saidvanes; Said large curve denotes the section curve of demister vane whichrandom tangents of two sides can form a least angle opposite flue gaspassage more than or equal to 90°, illustrated as 121 and 122 of FIG.12, herein the change of flow direction of flue gas is less than orequal to 90°.

The section curve of demisting vane of said super-sine demister owningdemisting function is a sine or near sine curve which amplitude value ismore than or equal to 1, or is a curve with absolute value sine shape,or comprise sine curves and absolute value sine curves; Near brokenlines can substitute for section curves of various said vanes.

BRIEF DESCRIPTION OF THE DRAWINGS

This invention is described in more detail below on the basis of thetheories with reference to the accompanied drawings.

In the drawings,

FIG. 1 sketch maps of the sections of various shell style pipelines.

FIG. 2 planform views of the different condensator modules.

FIG. 3 cutaway views of the heat radiating pieces and heat radiatingscrew threads of condensator or heater for flue gas.

FIG. 4 sketch map of section curves of various refluent demisters.

FIG. 5 sketch maps of compositions of demisting elements of refluentdemister.

FIG. 6 sketch maps of shapes and its change of demisting elements ofrefluent demister.

FIG. 7 sketch maps of venturitube effect of demisting vanes.

FIG. 8 sketch maps of sections and layers compositions of super-sinedemisting vanes.

FIG. 9 axonometric drawing of various frames and structures fordisturbing flue gas flow on surface of demisting element.

FIG. 10 sketch maps of drains and collecting liquid walls of super-sinedemister and normal wave demister.

FIG. 11 sketch maps of venturitube and parallel flue gas passages ofcompositions of refluent demisting vanes.

FIG. 12 sketch maps of section curves of large curves and mixture curvesof demisting vanes.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Herein give a detailed description for the present invention assistedwith attached figures as follows.

The Elastic Collision of Tiny Dust

Today the difficult problem of super-pure emission for flue gas lies ingetting rid of tiny dust, a flue gas treated with the method of wetspraying can wholly carry the dust with diameter of 0-15 μm, includingPM2.5, can carry 50% of dust with diameter of 15-250 μm, but the dustswith diameters more than 500 μm cannot be carried. Because the surfacetension of water the tiny dust will create elastic collision with waterdrop when impacting each other, so the tiny dusts are difficult toremove, they will fly over along with the flue gas. But whenrefrigerating or cooling saturated flue gas the vapor will condense onthe surface of tiny dust, consequently form mist and haze, as well asSO3 aerosol and Hg0 etc..

No Destruction No Construction

Because diameters of tiny dusts and mist/haze condensed by demister aretoo little so they own the nature of wind, normal centrifugal demisteris difficult to collect and demist, in order to demist must disturb theflow of flue gas to increase the odds of collision consequently collectand increase their diameters, then demist by centrifugal demister.

The Condensator

The condensator with a shell style heat-conductible pipeline is to ductrefrigerating medium via vaporizing or expanding to condense dust ofpure gas into mist/haze. Said shell style pipeline comprises shelljourney passage and tube journey passage, two pipelines with all kindsof sections including circle, square, wave shape, etc. insert togetherto form a least function element for cooling flue gas, such as FIG. 1 ofsketch maps of the sections of various shell style pipelines, whendesigned as shell style pipeline the inner tube can be a solid material,thereinto, the shell journey passage comprises the section between twoshell section curves, a section illustrated as 11, the tube journeypassage comprises the section inside inner tube section curve, a sectionillustrated as 12, some disturbing and/or supporting elements 13 insideshell journey passage can be designed, if not the supporting elementscan assembled at two ends, the refrigerating mediums flows inside shelljourney passage but not the tube journey passage that can keep stabilityof structure, this structure can utilizes refrigerating efficiently. Asthe lower temperature causing by refrigerating medium so saidrefrigerating medium can flow inside tube journey passage and the shelljourney passage can be filled with flowing or not heat-conductiblemediums such as water, air or oil etc. as buffer. Said shell stylepipeline can be a more then 2 layers shells structure such as multipletube with supporting elements illustrated as 14, or in order to conductheat etc. to design a multiple shell style pipeline which belongs to ashell style pipeline, for a instance, around shell style pipeline ortube style pipeline some tubes 15 are set to obtain more conducting heatarea and disturbing effect consequently a more efficient cooling effect,or in the interest of disturbing for flow some screw tubes and/or wavetubes etc. 16 can be set in the shell journey passages and/or tubejourney passages. Said multiple shell style passage/pipeline namely itis a multiple shells structure of more than 2 layers, and/or some shelljourneys and/or tube journey passages annexed some shell journeys and/ortube journey passages. Now, Said shell journey passage denotes 2 or morethan 2 independent closed section curves comprises a possible least flowsection which contains at least one independent closed section thatcannot be cut off; which can be named shell journey 1, shell journey 2etc.; Said tube journey passage denotes 1 independent closed sectioncurve comprises a possible least flow section which contains noindependent closed section that cannot be cut off; which can be namedtube journey 1, tube journey 2 etc.. Said definitions of shell journeypassage and tube journey passage are the same with all concepts ofpresent invention, as well as said the concept of cavity style pipelinein present invention which is equal to the concept of tube journeypassage.

Illustrated as FIG. 2, One at least of said shell style pipeline runsthrough section of flue gas flow and two collecting gas boxes 21 and 22are assembled at two ends which consequently forms a demisting module27, some supporting boards 23 can be assembled between two collectinggas boxes, and one at least of said demisting module covers the wholesection of flue gas flow; Or at least one joint locality of single saidshell style pipeline of said demisting module is set to joint singlesaid pipeline with joint element 24; Or at least one transitioncollecting gas box 25 is located on said demisting module to jointsingle said shell style pipeline beside itself two side; Or at least onemid-collecting gas box 26 is located on said demisting module 27 viawhich jointing to get through the section of flue gas flow; A demistingmodule can comprise a willful combination of at least one of said jointmethods; at least one of said demisting module covers a whole section offlue gas flow. The number of shell style pipelines contained in ademisting module may be 1-100, usually can be set as 10-30; The numberof said various joint localities depends on the diameter of tower, theconditions of assembly, the intensity of structure elements etc.,usually can be set as 0-30. In this invention said section of flowdenotes the section or near section of a flowing passage of gas orliquid.

Said refrigerating medium of the condensation dedust-demister set inpresent invention is of utilizable common one including compressed gaswhich can be used as refrigerating medium, said compressed gas can beone of the followings: air, nitrogen, hydrogen, oxygen, nature gas,liquefied petroleum gas, etc., as well as a supplied wind and/or a fluegas of a boiler. The heat energy generated by refrigerator should beutilized to heat pure gas for an example which heater can designed withsaid conductible shell style pipeline, which surface of fundamental puregas heating function elements can be designed with heat radiatingelements or frames.

For the effect of refrigerating, the surface of fundamentalrefrigerating function elements of the condensator in present inventioncan be designed with heat radiating elements or frames, such as wingslice, screw slice etc. illustrated as FIG. 3, Said fundamentalrefrigerating function elements connotes a least frames or structures ofrefrigerating or cooling function of a demister such as a passage ofshell style pipeline or cavity style pipeline in present invention,thereto a usual heat conductible iron plank, tube and piece.

Present invention set the condensator locating on the first class siteto meet wet flue gas firstly, along with the direction of flue gasothers demisters in present invention locating on the sites followingsaid first class, the condensator will take the effect of tube typedemister at the same time, a large numerous of slurry drops togetherwith mist/haze condensed by condensator will collide with shell stylepipeline consequently pool to drip, thereby this method can efficientlyget rid of slurry drops and hazes containing dusts, at the same time,because the large numerous slurry drops usually in a number of10000-40000 mg/Nm3 so which can catch more mist generated just,especially for a tower which flue gas is not in saturation or amount ofspray slurry is less relatively this method appears more advancement.For the delay of heat conducting and course of misting so thecondensators should be set at several sites behind the first class. Saidclass is usually divided by a set of supporting frame in a distance ofusual 2 meters between them which will be set with a demister.

When a raw gas containing dust less than 20 mg/Nm3 or the emissionstandard is lower relatively or the condensator locates on a site exceptthe first class, the refrigerating system can be changed to coolingsystem, at least one cooling medium or mixture cooling medium of water,oil and gas can substitute for said refrigerating medium, especialenvironmental air around, a boiler supplied wind, a lower temperatureflue gas emitted, and a cavity style pipeline including refluent curvessaid in claim 10 can substitute for segments or whole of said shellstyle pipeline, said two substitutions can be not in simultaneity. Saidcavity style pipeline, namely via which area/cavity wrapped by itsclosed section curve at radius direction inside which a current mediumwill flow, referring to FIG. 1.

The Refluent Demister

Illustrated as FIG. 4, the refluent demister, the demisting element 48comprises at least one demisting vane 41 owning at least one refluentcurve of said vane section which makes flue gas to be refluent opposingto its original direction, said section denotes the section at radiusdirection namely width direction, without special explanation in presentinvention the section of demisting vanes all denote a section at radiusnamely width direction. Because the centrifugal principle the directionof refluence opposing to mustn't be the direction of the raw gas beforeentering into demister, so the direction of fluent curve can be anyoneat will willfully. Said refluent curve 410 denotes the section curve ofdemister vane 41 which random tangents of two sides can form a leastangle 49 opposite flue gas passage less than or equal to 90°, hereinsaid refluence implies the change of flow direction of flue gas is morethan or equal to 90°. The curvature of said refluent curve should be aslarger as possible to obtain a better centrifugal effect for demisting,the larger slurry drops pooled will be blew to collecting liquid wall411 behind it which owning the function to hold up and collect drops andmist transported by flue gas comprises demisting vane or parts ofdemisting vane or independent demisting vane. The drops and mist held upby said collecting liquid walls will flow downwards to a drain 42 whichcomprises nearest vanes or one bended vanes or an independent vanes suchas FIG. 5. The slurry in the drains forced by kinetic pressure of fluegas will be drained out from holes 44 within two end boards and/orsupporting boards 45 of a demisting module or drained out directlywithout ends boards.

The flue gas spraying out from flue gas passage 43 mix together atoverfall zone 46 to increase the diameters of mist, the large dropssprayed out are collected by collecting liquid walls to drain, and thedisturbing zone 47 can increase probability of pooling.

The nearest demisting vanes of refluent demister comprise a venturitubeor near venturitube passages 111 for flue gas, such as FIG. 11, saidventuritube or near venturitube passage denotes a flue gas passagesection similar to the section of venturitube which can accelerate thevelocity of flue gas, can be limited by section curves of nearest vanes,Near broken lines can substitute for said curves. Said nearest demistingvanes can also be set as parallel flue gas passages 113 which denote asection curve of a demisting vane can be obtained via others sectioncurves of demisting vanes in a same demister module moving parallelly.Said above flue gas passages can comprise vairous mixture flue gaspassages 116, both omit disturbing zones 47 but change to confluententrances 114 and 115 or drains 117 of parallel flue gas passages, andexports of flue gas passages 112 can be designed as acceleration ordeceleration style.

Said venturitube or near venturitube passage can be applied to the vanesof the super-sine demister, the large curve demister, mixture curvedemister etc..

In the permissible extent of demisting capability the demisting elementcan be various in style, illustrated as FIGS. 5, 6, 7, 9 of structuresand frames of surface, 11 and 12 etc., containing but do not beinglimited into what mentioned in this invention and containing what can bereasonable imagined: the passages of flue gas can own multiple refluentcurves, the exports of passage of flue gas can be opened upwards, theangle of the entrances of passages of flue gas opposite the flue gasflow direction before entering into said passages can be less than|90|°, various composition of various demisting elements of presentinvention, the near broken lines can substitute for section curves ofsaid vanes.

One demisting module comprises at least one layer of unit layer, saidlayers joint or not each other, one layer demister occupying wholly flowsection of flue gas comprises at least one demisting module, saiddemisting elements via composing each other form a unit layer, saidcomposing each other contains but do not be limited into what mentionedin this invention and contains what can be reasonable imagined: thestyles of demisting vanes including number, the number of demister vanesof demisting element can be 1-10 pieces, normally 3-5 pieces,illustrated as FIGS. 4, 5, 6, 7, 9 of surface structures, 11, 12 ofmixture curve demisting elements containing refluent curve vanes, awillful various composing at will between demisting elements, unitlayers, demisting modules, and the imports direction of flue gas 43, thedrains and collecting liquid walls can be set more than one or do not beset, staggered or ordered disposals of demisting elements between unitlayers such as FIG. 5. Various models have various functions, a modelsuch as 65 in FIG. 6 can adapt for a lower flue gas velocity or a lowerload, but model of 66 can adapt for a higher flue gas velocity or load.

The drains and collecting walls of demister proffer a solution fortransporting slurry drops while a flue gas in a higher velocity for ahigher efficiency of demisting.

The Large Curve Demister & Mixture Curve Demister

In some possible cases of higher velocity of flue gas such as horizontalflue demister transporting slurry drops will happen even if withoutaccelerating flue gas so the large curve demister is born for asolution.

Said refluent curve of refluent demister can be changed to a large curveto form a demisting vane, illustrated as 121 of FIG. 12, said largecurve 121 denotes the section curve of demister vane which randomtangents of two sides can form a least angle 122 opposite flue gaspassage more than or equal to 90°, illustrated as 121 and 122 of FIG.12, herein the change of flow direction of flue gas is less than orequal to 90°. 123 shows a drain and 124 shows a collecting liquid wallwhich are similar to refluent demister.

Vanes with said large curves and said fluent curves can together formvarious mixture curve vanes demisters, such as 125 in FIG. 12.

Near broken lines can substitute for section curves of various saidvanes.

The Super-Sine Demister

In some possible cases of flue gas of lower velocity such as lower loadof a boiler the accelerating flue gas passages of demister are needed.The super-sine demister intends to increase the centrifugal effect offlue gas inside its passage. Such as FIG. 8, the section curve ofdemisting vane of said super-sine demister owning demisting function isa sine or near sine curve 81 which amplitude value is more than or equalto 1, or is a curve with absolute value sine shape 82, or comprise sinecurves and absolute value sine curves, such as curves of 85, 86, 87, 88.

One super-sine demisting module comprises at least one single layer,said single layer comprises various section curves of super-sinedemister vanes said above, the direction of wave crest of near layers issame 84 or opposite 83, at least one demisting module covers a wholesection of flue gas flow.

In the permissible extent of demisting capability the vane of super-sinedemister can be various, Such as some near broken lines can substitutefor section curves of various said vanes, referring to FIG. 6.

For some reasons the phenomena of carrying slurry drops will occurprobably, such as in a case of horizontal demister, illustrated as FIG.10, on the top of super-sine demister or normal wave demister the drains101 and collecting walls 102 are set to collect and drain slurry dropscarried by flue gas, a common drain 103 or collecting wall 104 can bedesigned for several vanes, which functions are similar to that ofrefluent demister.

Said methods above of setting drains and collecting walls can be appliedto vanes of various super-sine demister, normal wave demister, brokenline demister, can also be applied to vanes of a demister whichfundamental function elements of demisting is vanes, such as vanes ofrefluent demister illustrated as 61, 62, 63, 64 of FIG. 6, vanes ofmixture curve demister illustrated as 126 of FIG. 12, vanes of largedemister illustrated as 127 of FIG. 12, as well as normal wave demister,hollow wave demister etc..

A willful composition of at least one of said various drains and variouscollecting walls containing what can be imaged can be applied to ademister simultaneously at will.

The Disturbing Methods

In order to increase tension of overfall and odds of collision of tinymist/haze, such as FIG. 9, the surface meeting flue gas owning demistingfunction of a demister own at least one frame of vertical drains,convexity, concave, hole, hamulus, convex slot, concave slot, cranny,what aimed said various frames and structures lies in disturbing fluegas flow; Said above various assistant frames and structures can beapplied to a demister individually.

A demister which fundamental demisting function elements is vane aredesigned with convexity 71 at imports and/or exports of vanes for fluegas, said demister can be one of refluent demister, large curvedemister, mixture curve demister, super-sine demister, and normal wavedemister, broken line demister, and so on, a convexity can acceleratethe velocity of flue gas consequently enhance the venturitube effect socan remove haze more efficiently, also can increase the tension ofoverfall so as to increase the probability of collision and pooling.Said convexity can be designed along with whole or parts of edge ofvanes, or as something similar to a row of globes. Said edge should be acertain extent from edge to internal vane.

As another apparent characteristic of present invention set, a demisterwhich fundamental demisting function element is vane is designed with nointended leading current frames or structures at imports and/or exportsof vanes for flue gas. Said intended implies mainly or merely designed,said leading current connotes forcing a current from a direction toanother direction in a minimum extent of pressure loss and a maximumextent of flow field uniformity, said edge should be a certain extentfrom edge to internal vane which can act as an element of leadingcurrent.

While a demister assembled vertical-wards and which vaneshorizontal-wards a collecting liquid wall or an opposing vane may needto incline upwards a little to form a drain.

The present invention set can be assembled at horizontally or verticallynormally due to the direction of flue gas flow and/or the efficiency ofdemisting, and can be set as a style of plain or ridge

The Economic And Social Benefit

The present invention proffered a condensation dedust-demister set,which can accomplish super-pure emission of dust of less than 5 mg/Nm3and mist of less than 10 mg/Nm3 efficiently with a lower cost and alower pressure loss of around 200 Pa, and can adapt to a raw gas dust ofmore than 30 mg/Nm3 for super-pure emission. For the dust of 60 mg/Nm3of a raw gas, via multiple condensators, cooling deeply and/or multiplerefluent demisters etc. can succeed.

With cooling deeply, demisting efficiently can accomplish dust emissionof 0 mg/Nm3, with a heater for pure gas can accomplish mist emission of0 mg/Nm3.

The present invention set can remove SO3 aerosol and Hg0 etc.simultaneously.

Statement

Said above, others promised by law may draw out modifications andvariations according to the structures and technology and principles ofthis invention, therefore that the appended claims are intended to coversuch modifications and variations which are within the true scope andspirit of this invention.

1. A condensation dedust-demister set, its characteristic lies in,comprises at least one of following demister: a condensator, a refluentdemister, a large curve demister, a mixture curves demister and asuper-sine demister, thereinto, said condensator with a shell styleheat-conductible pipeline is to duct refrigerating medium owning thefunction to condense dust of pure gas into mist/haze; Said condensatorand each demister can be assembled individually.
 2. According to claim 1said a condensation dedust-demister set, its characteristic lies in,said refrigerating medium flows inside shell journey passage or tubejourney passage of said shell style pipeline, or flows both inside shelljourney passage and tube journey passage simultaneously.
 3. According toclaim 1 said a condensation dedust-demister set, its characteristic liesin, said refrigerating medium is of utilizable common one includingcompressed gas which can be used as refrigerating medium.
 4. Accordingto claim 1 said a condensation dedust-demister set, its characteristiclies in, one at least of said shell style pipeline runs through sectionof flue gas flow and a collecting gas box is assembled at each end whichconsequently forms a demisting module, and one at least of saiddemisting module covers the whole section of flue gas flow; Or at leastone joint locality of single said shell style pipeline of said demistingmodule is set to joint single said pipeline; Or at least one transitioncollecting gas box is located on said demisting module to joint singlesaid shell style pipeline beside itself two side; Or at least onemid-collecting gas box is located on said demisting module via whichjointing to get through the section of flue gas flow; A demisting modulecan comprise a willful combination of at least one of said jointmethods; at least one of said demisting module covers a whole section offlue gas flow.
 5. According to claim 1 said a condensationdeduct-demister set, its characteristic lies in, the surface offundamental refrigerating function elements of said condensator can bedesigned with heat radiating elements or frames.
 6. A condensationdedust-demister set, its characteristic lies in, at the first class siteis located with said condensator, at the second class site and thepossible consequent class sites are located with at least 0 saidcondensators simultaneously.
 7. According to claim 1 said a condensationdedust-demister set, its characteristic lies in, at least one coolingmedium or mixture cooling medium of water, oil and gas can substitutefor said refrigerating medium; A cavity style pipeline includingrefluent curves said in claim 10 can substitute for segments or whole ofsaid shell style pipeline; Said two substitutions can be not insimultaneity.
 8. According to claim 1 said a condensationdedust-demister set, its characteristic lies in, a probably designedpure gas heater in a project can utilize said shell style pipeline. 9.According to claim 8 said a condensation demister set, itscharacteristic lies in, the surface of fundamental pure gas heatingfunction elements can be designed with heat radiating elements orframes.
 10. According to claim 1 said a condensation dedust-demisterset, its characteristic lies in, the demisting element owning demistingfunction of said refluent demister comprises at least one demisting vaneowning at least one refluent curve of said vane section which forcesflue gas to be refluent; Near broken lines can substitute for saidrefluent curve.
 11. According to claim 10 said a condensationdedust-demister set, its characteristic lies in, the unit layer ofdemisting module comprises said demisting elements via composing eachothers, one demisting module comprises at least one layer of said unitlayer, one layer demister occupying wholly flow section of flue gascomprises at least one demisting module.
 12. A condensationdedust-demister set, its characteristic lies in, a demister whichfundamental demisting function element is vane are designed with drains;and/or with collecting liquid walls; and/or with venturitube or nearventuritube passages for flue gas comprising vanes nearest each other,and/or with parallel flue gas passages, said venturitube and parallelpassages can comprise various mixture flue gas passages; and/or withconvexities and/or with no intended leading current frames or structuresat imports and/or exports of vanes for flue gas; Near broken lines cansubstitute for said various section curves of vanes or frames orstructures; The surface meeting flue gas owning demisting function of ademister own at least one frame of vertical drain, convexity, concave,hole, hamulus, convex slot, concave slot, cranny; Said above variousassistant curves, frames and structures can be applied to a demisterindividually.
 13. (canceled)
 14. (canceled)
 15. According to claim 10said a condensation dedust-demister set, its characteristic lies in,said refluent curve of refluent demister can be designed as a largecurve to form a demisting vane; Vanes with said large curve and saidrefluent curve can together form various mixture curves vanes demisters;Near broken lines can substitute for section curves of various saidvanes.
 16. According to claim 1 said a condensation dedust-demister set,its characteristic lies in, the section curve of demisting vane of saidsuper-sine demister owning demisting function is a sine or near sinecurve which amplitude value, is more than or equal to 1, or is a curvewith absolute value sine shape, or comprise sine curves and absolutevalue sine curves; Near broken lines can substitute for section curvesof various said vanes.
 17. (canceled)
 18. (canceled)
 19. (canceled) 20.(canceled)